Move Sad Tab implementation out of the TabContentsViews.

chrome/browser/ui/cocoa/tab_contents/sad_tab_controller.mm

Index: chrome/browser/ui/cocoa/tab_contents/sad_tab_controller.mm
diff --git a/chrome/browser/ui/cocoa/tab_contents/sad_tab_controller.mm b/chrome/browser/ui/cocoa/tab_contents/sad_tab_controller.mm
index c01a9458f809d86c29d4c8a85d9dcaae154db167..35005a3e1cf8cfefa124472354ead4908e5748e5 100644
--- a/chrome/browser/ui/cocoa/tab_contents/sad_tab_controller.mm
+++ b/chrome/browser/ui/cocoa/tab_contents/sad_tab_controller.mm
@@ -7,17 +7,21 @@
 #include "base/mac/mac_util.h"
 #import "chrome/browser/ui/cocoa/tab_contents/sad_tab_view.h"
 
+namespace sad_tab_controller_mac {
+SadTabController* CreateSadTabController(TabContents* tab_contents) {
+  return [[SadTabController alloc] initWithTabContents:tab_contents];
+}
+gfx::NativeView ViewOfSadTabController(SadTabController* sad_tab) {
+  return [sad_tab view];
+}
+}
+
 @implementation SadTabController
 
-- (id)initWithTabContents:(TabContents*)someTabContents
-                superview:(NSView*)superview {
+- (id)initWithTabContents:(TabContents*)tabContents {
   if ((self = [super initWithNibName:@"SadTab"
                               bundle:base::mac::MainAppBundle()])) {
-    tabContents_ = someTabContents;
-
-    NSView* view = [self view];
-    [superview addSubview:view];
-    [view setFrame:[superview bounds]];
+    tabContents_ = tabContents;
   }
 
   return self;
@@ -31,11 +35,6 @@
   }
 }
 
-- (void)dealloc {
-  [[self view] removeFromSuperview];
-  [super dealloc];
-}
-
 - (TabContents*)tabContents {
   return tabContents_;
 }